<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html lang="en">
<head>
<title>Source code</title>
<link rel="stylesheet" type="text/css" href="../../../../../stylesheet.css" title="Style">
</head>
<body>
<div class="sourceContainer">
<pre><span class="sourceLineNo">001</span><a name="line.1"></a>
<span class="sourceLineNo">002</span>/*<a name="line.2"></a>
<span class="sourceLineNo">003</span> * Copyright (C) 2009 Archie L. Cobbs. All rights reserved.<a name="line.3"></a>
<span class="sourceLineNo">004</span> *<a name="line.4"></a>
<span class="sourceLineNo">005</span> * $Id: CompressionMode.html 16 2014-02-13 19:56:57Z archie.cobbs $<a name="line.5"></a>
<span class="sourceLineNo">006</span> */<a name="line.6"></a>
<span class="sourceLineNo">007</span><a name="line.7"></a>
<span class="sourceLineNo">008</span>package org.dellroad.lzma.client;<a name="line.8"></a>
<span class="sourceLineNo">009</span><a name="line.9"></a>
<span class="sourceLineNo">010</span>import org.dellroad.lzma.client.SevenZip.Compression.LZMA.Encoder;<a name="line.10"></a>
<span class="sourceLineNo">011</span><a name="line.11"></a>
<span class="sourceLineNo">012</span>/**<a name="line.12"></a>
<span class="sourceLineNo">013</span> * Represents LZMA compression modes, from 1 (fastest compression) to 9 (best compression).<a name="line.13"></a>
<span class="sourceLineNo">014</span> */<a name="line.14"></a>
<span class="sourceLineNo">015</span>public enum CompressionMode {<a name="line.15"></a>
<span class="sourceLineNo">016</span><a name="line.16"></a>
<span class="sourceLineNo">017</span>    MODE_1(1, 0, 16, 64,  Encoder.EMatchFinderTypeBT2, 3, 0, 2),<a name="line.17"></a>
<span class="sourceLineNo">018</span>    MODE_2(2, 0, 20, 64,  Encoder.EMatchFinderTypeBT2, 3, 0, 2),<a name="line.18"></a>
<span class="sourceLineNo">019</span>    MODE_3(3, 1, 19, 64,  Encoder.EMatchFinderTypeBT4, 3, 0, 2),<a name="line.19"></a>
<span class="sourceLineNo">020</span>    MODE_4(4, 2, 20, 64,  Encoder.EMatchFinderTypeBT4, 3, 0, 2),<a name="line.20"></a>
<span class="sourceLineNo">021</span>    MODE_5(5, 2, 21, 128, Encoder.EMatchFinderTypeBT4, 3, 0, 2),<a name="line.21"></a>
<span class="sourceLineNo">022</span>    MODE_6(6, 2, 22, 128, Encoder.EMatchFinderTypeBT4, 3, 0, 2),<a name="line.22"></a>
<span class="sourceLineNo">023</span>    MODE_7(7, 2, 23, 128, Encoder.EMatchFinderTypeBT4, 3, 0, 2),<a name="line.23"></a>
<span class="sourceLineNo">024</span>    MODE_8(8, 2, 24, 255, Encoder.EMatchFinderTypeBT4, 3, 0, 2),<a name="line.24"></a>
<span class="sourceLineNo">025</span>    MODE_9(9, 2, 25, 255, Encoder.EMatchFinderTypeBT4, 3, 0, 2);<a name="line.25"></a>
<span class="sourceLineNo">026</span><a name="line.26"></a>
<span class="sourceLineNo">027</span>    private final int level;<a name="line.27"></a>
<span class="sourceLineNo">028</span>    private final int algorithm;<a name="line.28"></a>
<span class="sourceLineNo">029</span>    private final int dictionarySize;<a name="line.29"></a>
<span class="sourceLineNo">030</span>    private final int fb;<a name="line.30"></a>
<span class="sourceLineNo">031</span>    private final int matchFinder;<a name="line.31"></a>
<span class="sourceLineNo">032</span>    private final int lc;<a name="line.32"></a>
<span class="sourceLineNo">033</span>    private final int lp;<a name="line.33"></a>
<span class="sourceLineNo">034</span>    private final int pb;<a name="line.34"></a>
<span class="sourceLineNo">035</span><a name="line.35"></a>
<span class="sourceLineNo">036</span>    private CompressionMode(int level, int algorithm, int dictionarySize, int fb, int matchFinder, int lc, int lp, int pb) {<a name="line.36"></a>
<span class="sourceLineNo">037</span>        this.level = level;<a name="line.37"></a>
<span class="sourceLineNo">038</span>        this.algorithm = algorithm;<a name="line.38"></a>
<span class="sourceLineNo">039</span>        this.dictionarySize = dictionarySize;<a name="line.39"></a>
<span class="sourceLineNo">040</span>        this.fb = fb;<a name="line.40"></a>
<span class="sourceLineNo">041</span>        this.matchFinder = matchFinder;<a name="line.41"></a>
<span class="sourceLineNo">042</span>        this.lc = lc;<a name="line.42"></a>
<span class="sourceLineNo">043</span>        this.lp = lp;<a name="line.43"></a>
<span class="sourceLineNo">044</span>        this.pb = pb;<a name="line.44"></a>
<span class="sourceLineNo">045</span>    }<a name="line.45"></a>
<span class="sourceLineNo">046</span><a name="line.46"></a>
<span class="sourceLineNo">047</span>    /**<a name="line.47"></a>
<span class="sourceLineNo">048</span>     * Configure the given {@link Encoder} based on this compression mode.<a name="line.48"></a>
<span class="sourceLineNo">049</span>     */<a name="line.49"></a>
<span class="sourceLineNo">050</span>    void configure(Encoder encoder) {<a name="line.50"></a>
<span class="sourceLineNo">051</span>        if (!encoder.SetAlgorithm(this.algorithm))<a name="line.51"></a>
<span class="sourceLineNo">052</span>            throw new RuntimeException("unexpected failure");<a name="line.52"></a>
<span class="sourceLineNo">053</span>        if (!encoder.SetDictionarySize(1 &lt;&lt; this.dictionarySize))<a name="line.53"></a>
<span class="sourceLineNo">054</span>            throw new RuntimeException("unexpected failure");<a name="line.54"></a>
<span class="sourceLineNo">055</span>        if (!encoder.SetNumFastBytes(this.fb))<a name="line.55"></a>
<span class="sourceLineNo">056</span>            throw new RuntimeException("unexpected failure");<a name="line.56"></a>
<span class="sourceLineNo">057</span>        if (!encoder.SetMatchFinder(this.matchFinder))<a name="line.57"></a>
<span class="sourceLineNo">058</span>            throw new RuntimeException("unexpected failure");<a name="line.58"></a>
<span class="sourceLineNo">059</span>        if (!encoder.SetLcLpPb(this.lc, this.lp, this.pb))<a name="line.59"></a>
<span class="sourceLineNo">060</span>            throw new RuntimeException("unexpected failure");<a name="line.60"></a>
<span class="sourceLineNo">061</span>    }<a name="line.61"></a>
<span class="sourceLineNo">062</span><a name="line.62"></a>
<span class="sourceLineNo">063</span>    /**<a name="line.63"></a>
<span class="sourceLineNo">064</span>     * Return the integer level number corresponding to this instance.<a name="line.64"></a>
<span class="sourceLineNo">065</span>     *<a name="line.65"></a>
<span class="sourceLineNo">066</span>     * @return a value from 1 to 9<a name="line.66"></a>
<span class="sourceLineNo">067</span>     * @see #get get()<a name="line.67"></a>
<span class="sourceLineNo">068</span>     */<a name="line.68"></a>
<span class="sourceLineNo">069</span>    public int getLevel() {<a name="line.69"></a>
<span class="sourceLineNo">070</span>        return this.level;<a name="line.70"></a>
<span class="sourceLineNo">071</span>    }<a name="line.71"></a>
<span class="sourceLineNo">072</span><a name="line.72"></a>
<span class="sourceLineNo">073</span>    /**<a name="line.73"></a>
<span class="sourceLineNo">074</span>     * The the instance corresponding to the integer {@code level}.<a name="line.74"></a>
<span class="sourceLineNo">075</span>     *<a name="line.75"></a>
<span class="sourceLineNo">076</span>     * @param level value from 1 (fastest) to 9 (best)<a name="line.76"></a>
<span class="sourceLineNo">077</span>     * @throws IllegalArgumentException if {@code mode} is invalid<a name="line.77"></a>
<span class="sourceLineNo">078</span>     * @see #getLevel getLevel()<a name="line.78"></a>
<span class="sourceLineNo">079</span>     */<a name="line.79"></a>
<span class="sourceLineNo">080</span>    public static CompressionMode get(int level) {<a name="line.80"></a>
<span class="sourceLineNo">081</span>        switch (level) {<a name="line.81"></a>
<span class="sourceLineNo">082</span>        case 1:<a name="line.82"></a>
<span class="sourceLineNo">083</span>            return MODE_1;<a name="line.83"></a>
<span class="sourceLineNo">084</span>        case 2:<a name="line.84"></a>
<span class="sourceLineNo">085</span>            return MODE_2;<a name="line.85"></a>
<span class="sourceLineNo">086</span>        case 3:<a name="line.86"></a>
<span class="sourceLineNo">087</span>            return MODE_3;<a name="line.87"></a>
<span class="sourceLineNo">088</span>        case 4:<a name="line.88"></a>
<span class="sourceLineNo">089</span>            return MODE_4;<a name="line.89"></a>
<span class="sourceLineNo">090</span>        case 5:<a name="line.90"></a>
<span class="sourceLineNo">091</span>            return MODE_5;<a name="line.91"></a>
<span class="sourceLineNo">092</span>        case 6:<a name="line.92"></a>
<span class="sourceLineNo">093</span>            return MODE_6;<a name="line.93"></a>
<span class="sourceLineNo">094</span>        case 7:<a name="line.94"></a>
<span class="sourceLineNo">095</span>            return MODE_7;<a name="line.95"></a>
<span class="sourceLineNo">096</span>        case 8:<a name="line.96"></a>
<span class="sourceLineNo">097</span>            return MODE_8;<a name="line.97"></a>
<span class="sourceLineNo">098</span>        case 9:<a name="line.98"></a>
<span class="sourceLineNo">099</span>            return MODE_9;<a name="line.99"></a>
<span class="sourceLineNo">100</span>        default:<a name="line.100"></a>
<span class="sourceLineNo">101</span>            throw new IllegalArgumentException("invalid level " + level);<a name="line.101"></a>
<span class="sourceLineNo">102</span>        }<a name="line.102"></a>
<span class="sourceLineNo">103</span>    }<a name="line.103"></a>
<span class="sourceLineNo">104</span>}<a name="line.104"></a>
<span class="sourceLineNo">105</span><a name="line.105"></a>




























































</pre>
</div>
</body>
</html>
